High-voltage wet-type electrostatic waste gas treatment device

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a high-voltage wet-type electrostatic waste gas treatment device which comprises a shell, a waste gas inlet is formed in the lower portion of the front side of the shell, a waste gas outlet is formed in the upper portion of the rear side of the shell, and a circulating water tank is installed at the bottom of the shell. An overflow port, a water inlet and a water outlet are formed in the side face of the circulating water tank, a plurality of anode tubes which are vertically arranged are horizontally arrayed in the middle of the interior of the shell, a cathode wire is assembled in each anode tube, and an automatic spraying assembly is installed at the top of the shell. According to the device, the heating assembly and the fan system are specially designed, the anode tube and the cathode wire can be rapidly dried after each time of wet cleaning, the problems of corrosion and performance reduction caused by long-term moisture are effectively avoided, the optimal working state of the anode tube and the cathode wire is guaranteed, the service life of internal key components is prolonged, and the service life of the anode tube and the cathode wire is prolonged. And the maintenance frequency and cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a high-voltage wet electrostatic waste gas treatment device. Background Technology

[0002] Waste gas treatment is an indispensable part of modern industrial production, especially for industries such as chemical, metallurgical, printing and dyeing, and coating that generate large amounts of harmful gases. Currently, in order to address the waste gas emission problems of these industries, a variety of waste gas treatment methods have been developed, including but not limited to absorption, adsorption, catalytic combustion, and wet electrostatic precipitators. Among them, wet electrostatic precipitators use an electrostatic field to enhance the efficiency of particulate matter collection and combine it with a wet cleaning process to effectively remove deposited particulate matter and cool waste gas. Due to its high efficiency and environmental friendliness, this method has received widespread attention. This method is particularly suitable for treating waste gas containing high humidity, high viscosity, and corrosive gases, and can significantly improve waste gas purification efficiency while reducing negative environmental impacts.

[0003] Patent CN216173240U, authorized by patent publication number CN216173240U, discloses a high-voltage electrostatic wet dust collector for industrial waste gas treatment. This patent incorporates a storage tank, a tank cover, an exhaust dust collection cylinder, and a waste gas inlet pipe. An alkaline solution is added to the storage tank, allowing acidic components such as CO2 and H2S in the waste gas to be neutralized and removed when the waste gas is introduced. Furthermore, by recycling a portion of the alkaline solution for spraying, the waste gas purification effect is further improved. After preliminary purification, the waste gas, through the principle of corona discharge, forms a strong electric field around the cathode wire, causing dust particles to become negatively charged and move towards the anode, ultimately... The dust is collected on the inner wall of the exhaust dust collector, completing the dust removal process of the exhaust gas. To further prevent dust accumulation, the solution sprayed from the spray nozzles forms a downward water flow to wash away the dust adhering to the inner wall. However, although the above solution performs well in exhaust gas treatment, it has some shortcomings. Specifically, a large amount of moisture remains inside the device after each cleaning, causing the device to be in a humid environment for a long time. This not only affects the subsequent dust removal efficiency but also accelerates the aging process of the internal equipment, especially causing corrosion of the anode plate and a decrease in the insulation performance of the cathode wire, thereby shortening the service life of the entire device.

[0004] Therefore, there is an urgent need to provide a high-pressure wet electrostatic waste gas treatment device that can effectively remove the moisture left during the cleaning process and keep the inside of the device dry. Utility Model Content

[0005] In order to overcome the shortcomings of existing high-voltage electrostatic wet dust collectors, which leave a large amount of residual moisture inside after cleaning, resulting in the equipment being in a humid environment for a long time, affecting the subsequent dust removal efficiency, accelerating the aging of internal equipment, and shortening its service life, this utility model provides a high-voltage wet electrostatic waste gas treatment device that can effectively remove the moisture left during the cleaning process and keep the inside of the device dry.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: a high-pressure wet electrostatic waste gas treatment device, comprising a housing, with a waste gas inlet at the lower front and a waste gas outlet at the upper rear. A circulating water tank is installed at the bottom of the housing, with an overflow outlet, an inlet, and a drain outlet on the side of the tank. Multiple anode tubes arranged vertically are horizontally arrayed in the middle of the housing's interior, each anode tube containing a cathode wire. An automatic spray assembly is installed at the top of the housing, and a heat-conducting frame is installed at the top of each cathode wire. The heat-conducting frame has multiple heat-conducting ports aligned with the cathode wire below. A heating assembly, consisting of multiple horizontally arranged heating tubes, is installed at the top of the housing. An integrated duct assembly is installed at the top of the housing, connected to and communicating with the fan's output end, and located above the heat-conducting frame. The number and position of the ducts correspond to the anode tubes.

[0007] As a further preferred embodiment, the outer casing is provided with maintenance platform railings on the left and right sides.

[0008] As a further preferred embodiment, a plurality of circular atomizing nozzles are installed on the upper part of the exhaust gas inlet, and the circular atomizing nozzles are all connected to a first water supply pipe, on which a first water pump is installed.

[0009] As a further preferred embodiment, an activated carbon filter plate is installed inside the exhaust gas outlet, and a second water pump is installed on the outer shell near the exhaust gas outlet. The input end of the second water pump is connected to an external water source, and the output end of the second water pump is connected to a second water supply pipe. A square atomizing nozzle is installed on the second water supply pipe, and the square atomizing nozzle is located above the front side of the activated carbon filter plate.

[0010] As a further preferred embodiment, the exhaust gas inlet is provided with a sloping water-blocking block.

[0011] As a further preferred embodiment, a protective shell is provided on the outer front side of the housing near the heating component.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. The device is specially designed with heating components and a fan system, which can quickly dry the anode tube and cathode wire after each wet cleaning, effectively avoiding corrosion and performance degradation caused by long-term moisture, ensuring the optimal working condition of the anode tube and cathode wire, extending the service life of key internal components, and reducing maintenance frequency and cost.

[0013] 2. When the exhaust gas enters the system, the first water pump pumps the desulfurization solution to the circular atomizing nozzle to form a water curtain, so that the exhaust gas comes into full contact with the desulfurization solution in the early stage of entering the device, effectively removing acidic gases such as sulfur dioxide from the exhaust gas. This preliminary desulfurization treatment not only improves the efficiency of the subsequent dust removal process, but also reduces the harm to the environment.

[0014] 3. By installing activated carbon filter plates inside the exhaust gas outlet, residual dust is further captured, ensuring the cleanliness of the final exhaust gas. The activated carbon filter plates are designed with an automatic cleaning mechanism. The activated carbon filter plates are regularly rinsed using a second water pump and square atomizing nozzles, which can effectively remove the dust and other impurities accumulated on them, avoiding the problem of reduced purification efficiency due to clogging, thereby extending the service life of the activated carbon filter plates. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the back of this utility model.

[0017] Figure 3 This is a three-dimensional sectional view of the present invention.

[0018] Figure 4 This is a three-dimensional structural diagram of the heat-conducting frame and heating component of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the fan and integrated duct assembly of this utility model.

[0020] Figure 6 This is a three-dimensional cross-sectional view of the circular atomizing nozzle, the first water supply pipe, and the first water pump of this utility model.

[0021] Figure 7 This is a three-dimensional cross-sectional view of the activated carbon filter plate, the second water pump, and the second water delivery pipe of this utility model.

[0022] The components are: 1-outer shell, 2-circulating water tank, 3-anode tube, 4-cathode wire, 5-automatic spray assembly, 6-maintenance platform guardrail, 7-exhaust gas inlet, 8-exhaust gas outlet, 9-heat conduction frame, 10-heating assembly, 11-fan, 12-integrated air duct assembly, 13-circular atomizing nozzle, 14-first water supply pipe, 15-first water pump, 16-activated carbon filter plate, 17-second water pump, 18-second water supply pipe, 19-square atomizing nozzle, 20-sloping water baffle, 21-protective shell. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example 1: Please refer to Figures 1-5A high-voltage wet electrostatic waste gas treatment device includes an outer shell 1. The lower front part of the outer shell 1 has a waste gas inlet 7, and the upper rear part has a waste gas outlet 8, designed to allow waste gas to flow from bottom to top. Maintenance platform railings 6 are provided on the left and right sides of the outer shell 1, designed to facilitate safe operation by maintenance personnel. A circulating water tank 2 is installed at the bottom of the outer shell 1 for storing and circulating water. The circulating water tank 2 has an overflow outlet, an inlet, and a drain outlet on its side for easy control of the water level and for water replenishment and discharge. Multiple vertically arranged anode tubes 3 are horizontally arrayed in the middle of the interior of the outer shell 1. Each anode tube 3 is equipped with a cathode wire 4, forming a strong electric field area. Under the action of this strong electric field, dust and gas are separated. An automatic spray assembly 5 is installed on the top of the outer shell 1 for periodically rinsing the interior of the device and the anode tubes 3. To remove deposited particulate matter, a heat-conducting frame 9 is installed at the top of the cathode wire 4. The heat-conducting frame 9 has multiple heat-conducting ports aligned with the cathode wire 4 below. A heating component 10 is installed inside the heat-conducting frame 9. The heating component 10 consists of seven heating tubes laid out in a flat manner to distribute heat evenly. A protective shell 21 is provided on the front side of the outer shell 1 near the heating component 10. The protective shell 21 covers the connection position of the heating component 10, protecting the heating wire and its connection points from the influence of the external environment, and improving the safety and stability of the equipment operation. A fan 11 is installed on the top of the outer shell 1. An integrated air duct assembly 12 is installed on the top inside the outer shell 1. The integrated air duct assembly 12 is connected to and communicates with the output end of the fan 11. The integrated air duct assembly 12 is located above the heat-conducting frame 9. The number and position of its air ducts correspond to the anode tube 3 to ensure that hot air can evenly cover the entire area of ​​the anode tube 3, thereby effectively drying the anode tube 3 and the cathode wire 4.

[0025] When this device is used to treat waste gas, the waste gas enters through the waste gas inlet 7. The cathode wire 4 is energized, creating a strong electric field nearby. Under the influence of this strong electric field, air molecules ionize, producing a large number of electrons and ions. These electrons and ions generated by the discharge of the cathode wire 4 move towards the poles under the influence of the electric field and collide with dust particles in the airflow, causing the dust particles to become charged. The charged dust particles then move towards the anode tube 3, which has the opposite polarity, under the influence of the electric field and deposit on the wall of the anode tube 3, thus achieving the separation of dust and gas. The purified gas is discharged from the waste gas outlet 8, and subsequently, the automatic spray assembly 5... The device is started and the internal parts and anode tube 3 are flushed downwards. The particulate matter flows back to the circulating water tank 2 with the water. The circulating water is reconnected to the automatic spray assembly 5 by the pump for reuse. After cleaning, the heating assembly 10 is started. The heat generated by the heating tube is evenly distributed in the area of ​​the heat conduction frame 9. Then, the fan 11 introduces cold air from the outside. The integrated air duct assembly 12 guides the cold air to the heating assembly 10. The cold air becomes a hot airflow after passing through the heating assembly 10. It flows downwards to cover the entire area of ​​the anode tube 3 and cathode wire 4, ensuring that all parts that need to be dried are fully heated. This effectively removes the moisture left during the cleaning process and ensures that the device is dry before and after use.

[0026] Example 2: Based on Example 1, please refer to... Figure 6 The exhaust gas inlet 7 is equipped with three circular atomizing nozzles 13, which are connected to a first water supply pipe 14. A first water pump 15 is installed on the first water supply pipe 14 to supply the desulfurization solution. The exhaust gas inlet 7 is equipped with a sloping water baffle 20. The design of the sloping water baffle 20 helps to prevent water from flowing back into the exhaust gas inlet pipe during the spraying process, and at the same time guides the water to flow smoothly downward into the circulating water tank 2, reducing water loss and external environmental pollution.

[0027] Please see Figure 7 An activated carbon filter plate 16 is installed inside the exhaust gas outlet 8 to further remove residual dust in the exhaust gas. A second water pump 17 is installed on the outer shell 1 near the exhaust gas outlet 8. The input end of the second water pump 17 is connected to an external water source, and the output end of the second water pump 17 is connected to a second water supply pipe 18. A square atomizing nozzle 19 is installed on the second water supply pipe 18. The square atomizing nozzle 19 is located above the front side of the activated carbon filter plate 16 to rinse the activated carbon filter plate 16.

[0028] In actual operation, when the exhaust gas first passes through the exhaust gas inlet 7, the first water pump 15 starts and pumps the desulfurization solution to the circular atomizing nozzle 13 to form a water curtain. When the exhaust gas enters, it passes through the water curtain, and the sulfur dioxide in the exhaust gas comes into full contact with the desulfurization solution to complete the preliminary desulfurization treatment, which facilitates the subsequent dust removal process. The treated gas continues to flow upward and is finally discharged through the exhaust gas outlet 8. During this process, the residual dust in the exhaust gas is adsorbed by the activated carbon filter plate 16 to ensure the dust removal effect of the exhaust gas. In order to ensure the long-term effectiveness of the activated carbon filter plate 16, it is cleaned regularly using the second water pump 17 and the square atomizing nozzle 19.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage wet electrostatic waste gas treatment device, comprising a shell (1), wherein a waste gas inlet (7) is provided on the lower front side of the shell (1), and a waste gas outlet (8) is provided on the upper rear side; a circulating water tank (2) is installed at the bottom of the shell (1), and an overflow outlet, an inlet, and a drain outlet are provided on the side of the circulating water tank (2); multiple anode tubes (3) arranged vertically are horizontally arranged in the middle position inside the shell (1), and a cathode wire (4) is installed in each anode tube (3); and an automatic spray assembly (5) is installed on the top of the shell (1), characterized in that: A heat-conducting frame (9) is installed at the top of the cathode wire (4). The heat-conducting frame (9) has multiple heat-conducting ports aligned with the cathode wire (4) below. A heating component (10) is installed inside the heat-conducting frame (9). The heating component (10) consists of multiple heating tubes laid flat. A fan (11) is installed at the top of the outer shell (1). An integrated air duct assembly (12) is installed at the top inside the outer shell (1). The integrated air duct assembly (12) is connected to and communicates with the output end of the fan (11). The integrated air duct assembly (12) is located above the heat-conducting frame (9), and the number and position of its air ducts correspond to the anode tube (3).

2. The high-voltage wet electrostatic waste gas treatment device according to claim 1, characterized in that: The outer shell (1) is provided with maintenance platform railings (6) on the left and right sides.

3. The high-voltage wet electrostatic waste gas treatment device according to claim 2, characterized in that: Multiple circular atomizing nozzles (13) are installed on the upper part of the exhaust gas inlet (7). The circular atomizing nozzles (13) are connected to a first water supply pipe (14). A first water pump (15) is installed on the first water supply pipe (14).

4. The high-voltage wet electrostatic waste gas treatment device according to claim 3, characterized in that: An activated carbon filter plate (16) is installed inside the exhaust gas outlet (8). A second water pump (17) is installed on the outer shell (1) near the exhaust gas outlet (8). The input end of the second water pump (17) is connected to an external water source, and the output end of the second water pump (17) is connected to a second water supply pipe (18). A square atomizing nozzle (19) is installed on the second water supply pipe (18). The square atomizing nozzle (19) is located above the front side of the activated carbon filter plate (16).

5. The high-voltage wet electrostatic waste gas treatment device according to claim 4, characterized in that: The exhaust gas inlet (7) is equipped with a sloping water baffle (20).

6. The high-voltage wet electrostatic waste gas treatment device according to claim 5, characterized in that: A protective shell (21) is provided on the front side of the outer shell (1) near the heating component (10).

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